<!DOCTYPE html>
<html lang="en" xmlns:wicket="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <span wicket:id ="border">
        <span wicket:id="birthday">输出生日消息</span>
    </span>
</body>
</html>